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Abstract #4007

Automatic truncation of the Principal Component Analysis for improved image quality in radial cardiac real-time imaging

André Fischer1,2, Peng Lai3, and El-Sayed Ibrahim4

1GE Global Research Europe, Garching bei München, Germany, 2Cardiac Center of Excellence, GE Healthcare, Garching bei München, Germany, 3GE Healthcare, Menlo Park, CA, United States, 4GE Healthcare, Waukesha, WI, United States

Radial cardiac real-time datasets are usually compromised by streaking artifacts. Truncated principal component analysis (PCA) has been proposed to remove streaking and improve apparent SNR of the images. However, a proper threshold for truncation of the PCA has to be selected to maintain good temporal fidelity. This work proposes a method for automatic truncation of the PCA and compares a soft against the standard hard thresholding approach. Results indicate that the proposed method in combination with soft thresholding offers reduced temporal blurring and streaking artifacts while improving apparent SNR.

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